<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Search_Lucene
 * @subpackage Document
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/** Zend_Search_Lucene_Document_OpenXml */
require_once 'Zend/Search/Lucene/Document/OpenXml.php';

if (class_exists ( 'ZipArchive' )) {
	
	/**
	 * Docx document.
	 *
	 * @category   Zend
	 * @package    Zend_Search_Lucene
	 * @subpackage Document
	 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
	 * @license    http://framework.zend.com/license/new-bsd     New BSD License
	 */
	class Zend_Search_Lucene_Document_Docx extends Zend_Search_Lucene_Document_OpenXml {
		/**
		 * Xml Schema - WordprocessingML
		 *
		 * @var string
		 */
		const SCHEMA_WORDPROCESSINGML = 'http://schemas.openxmlformats.org/wordprocessingml/2006/main';
		
		/**
		 * Object constructor
		 *
		 * @param string  $fileName
		 * @param boolean $storeContent
		 */
		private function __construct($fileName, $storeContent) {
			// Document data holders
			$documentBody = array ( );
			$coreProperties = array ( );
			
			// Open OpenXML package
			$package = new ZipArchive ( );
			$package->open ( $fileName );
			
			// Read relations and search for officeDocument
			$relations = simplexml_load_string ( $package->getFromName ( "_rels/.rels" ) );
			foreach ( $relations->Relationship as $rel ) {
				if ($rel ["Type"] == Zend_Search_Lucene_Document_OpenXml::SCHEMA_OFFICEDOCUMENT) {
					// Found office document! Read in contents...
					$contents = simplexml_load_string ( $package->getFromName ( $this->absoluteZipPath ( dirname ( $rel ["Target"] ) . "/" . basename ( $rel ["Target"] ) ) ) );
					
					$contents->registerXPathNamespace ( "w", Zend_Search_Lucene_Document_Docx::SCHEMA_WORDPROCESSINGML );
					$paragraphs = $contents->xpath ( '//w:body/w:p' );
					
					foreach ( $paragraphs as $paragraph ) {
						$runs = $paragraph->xpath ( '//w:r/w:t' );
						foreach ( $runs as $run ) {
							$documentBody [] = ( string ) $run;
						}
					}
					
					break;
				}
			}
			
			// Read core properties
			$coreProperties = $this->extractMetaData ( $package );
			
			// Close file
			$package->close ();
			
			// Store filename
			$this->addField ( Zend_Search_Lucene_Field::Text ( 'filename', $fileName ) );
			
			// Store contents
			if ($storeContent) {
				$this->addField ( Zend_Search_Lucene_Field::Text ( 'body', implode ( ' ', $documentBody ) ) );
			} else {
				$this->addField ( Zend_Search_Lucene_Field::UnStored ( 'body', implode ( ' ', $documentBody ) ) );
			}
			
			// Store meta data properties
			foreach ( $coreProperties as $key => $value ) {
				$this->addField ( Zend_Search_Lucene_Field::Text ( $key, $value ) );
			}
			
			// Store title (if not present in meta data)
			if (! isset ( $coreProperties ['title'] )) {
				$this->addField ( Zend_Search_Lucene_Field::Text ( 'title', $fileName ) );
			}
		}
		
		/**
		 * Load Docx document from a file
		 *
		 * @param string  $fileName
		 * @param boolean $storeContent
		 * @return Zend_Search_Lucene_Document_Docx
		 */
		public static function loadDocxFile($fileName, $storeContent = false) {
			return new Zend_Search_Lucene_Document_Docx ( $fileName, $storeContent );
		}
	}

} // end if (class_exists('ZipArchive'))
